Sound-box for phonographs.



N. H. HOLLAND. souun sox ron PHoNoGRAPHs.

APPLICATION FILED FEB. I7. i911.

, UNiTED vSTATES PATENT Vorriion.

NEWMAN n. HOLLAND, or WEsr ORANGE., NEW JERSEY, AssIeNon'To E'W JERSEY PATENT COMPANY, 0F WEST dORANGE, NEW JERSEY, A. CORFOBATION NEW JERSEY.

lsemina-Box ron PHoNoGRAP'Hs.

speemoanun o: Letters Patent.

Application led Februaryi 17, 1911. Serial No. 609,101.

and useful Improvements in Sound-.Boxes for lhonographs, of Vwhich the1 following is a description. -r x My invention Yrelates to 'sound boxes and 'more particularly to that part off a sound box which carries the diaphragm andv the stylus. It has heretoforeA been customary to mount the stylus of a recorder in an armor lever disposed at an angle with reference to the diaphragm and secured thereto both at the center'and at the periphery thereof. '.Dhis construction is obj edtionajble in that the' inclined stylus varm acts as a brace and thereby brakes or dampens Vthe vibrations I of the diaphragm.-

It is my object to eliminatethisr objection by securing the stylus arm to the diaphragm memberA 2 and forms a ball vand socketjoint therewith, the upper end of the said tube engagmg the boreof the neck 7 of tle body, as 1s common 1n ldevices of this character.

7 represents astop for preventing dis'- 60 Y placement` of the tube 5 from its socketin the member 2. v f

The diaphragm support 2 isr` provided with an annular flange 8 having a recess 9 .extending circumferentially thereofand substantially parallel with lthe flat upper part lOpof the said support. Surrounding the diaphragm l1 in engagement with the edge or periphery thereof 1s a ring or gasy v ket 1 2 of rubber or lother yielding material 70 provided with parallel annular 'flanges 13 f -and -14 extending over the opposite faces `of Mthe d iaphragm. In securing the latter in' position, the ring `12 is placed aroundthe edge thereof; and the diaphragm Iwith the lring attached thereto is then forced along' the flange 8b until the ring becomes engaged 1n the recess 9, the cylindrical inner surface i Patenteaaune13e,v1o1c.

in such a way that the portion of the said of the flange 8 permitting ready'movement arm which is adjacent the per1phery of thet of the diaphragm into position. A washer 80 `diaphragm will be movable In order that my inventlon zmaybe better l understood, attention is hereby directed to V the Vaccompanying drawing forming a part of this specification, and in whichf- Figure 1 isa side-elevation of'a recorder embodying my invention; Fig.y2 is a'fcentral, vertical section of the Vd-iaphnagm support .and the parts carrieds-therebyythe diaphragm being shown ,in end elevation and Fig. 3 is a-bottom plan-viewfpartly broken 'away of thede'vice shown in Fig. 2.

In all of 'the views, like parts aredesignated by the same yreference numerals.,

Referring to the drawings, ltrepresents the" body of the recorder, an'd 2 the `diaphragm support 'or casing, which'latter is -provided with an arm- 3 pivoted atits outer t end to the `lowerend of the. arm L depend- 'ging fromthe bedy "1., A 'weighted' tube l5v (t5v rests at its lower end in the sookety of the 15 of paper or` other suitable Amaterial `is l placed between the ring and the part 10 of the support 6. ,As the material of Iwhich the ring 12 is made is yielding, the diaphragm has a slight motion at its edge and,y '85 therefore, vibrates more freely than if it were rigidly secured in place.

For securing the stylus to the diaphragm,

an inclined arm 16 secured to a support 1f? whichl is fastened to the diaphragm substantially centrally ,thereof is provided.

This support ispreferably formedy ofsheet metal and Lis provided atits base with'tabs 18 and 19 adapted to be passed through incisions in the diaphragmy and to be bent 95 over into engagement with the diaphragm to secure thesupport inplace. The arm-1G extends into proximity to the edge ofthe diaphragm, and its outer end is engaged between the flange 14 and .the diaphragm. lO By reason of this construction, the outer end vof the .arm is fee to move with reference `v'to the diaphragm, and the center of the lat- )ter is therefore' freelymovablewith refer-- ence to lits edges, whereby thel diaphragm ,maintains a very4 high degree of sensitiveness. Furthermore, with this construction, f the thrust impartedby the stylus through fthe stylus arm yto the peripherypofcthe diaphragm'is slightfand does not appreciably 110` diaphragm, @Supp interfere with/the free vibration lof ,the diaphragm.V "A- guardor stop 20 extends under the arm l16. preferably adjacent its ',outer end and is secured to the diaphra m in a manner similar to that employed or' ,ufastening the support '17 in place. This stop lim-its the `movement of the arm away from `the iiliaphragm,v The 'stylus' 2l is l mounted in a tubular holder`22 which is secured inthe i'nner end of the-arm 16. f

vIt will be seen that -the'ring er gasket 12.

constitutes the sole means for securingthe` y diaphragm 11 and a stylus arm 16 to the support 2. The diaphragm with the stylus 15 armand the ring 12 attached thereto may accordingly be secured to or "removed 'fromv diaphragm,a;support, a stylus armrsecured. v i tothe diaphragm substantially at the center thereof'and l'extending into proximity to the Vedge jthereo' member securing the l diaphragm u' port `and yieldingly- 3o f' pressing t ter aexpgemty-of the arm toward the'fdiaphragm Substantially as dei' l scribed.4

- 22; .Ina device Vto the dia h-ragmisub ter thereo and ex u the edge -thereo f,"`a

,material `provided wit tending over the opposi f 540\' phra'gm for securing the di tdi-the y support, thebuter' extremitythe stylus Han I V ranged '-to coperate with the 4diaphragm substantially at the center thereof-and exof yielding material Afor securinv the dia'-` phra a' device of thelela'ss described,a

diaphragm, a support therefor, a stylus arm l secured-to sald. diaphragmfjat the centerA thereof, and 'astylus mounted'in said arm, fphragm to said support, said means having said arm o o-acting with fthe peripheral pori tlon of said diaphragm toiresist'thrust'on 4sald stylus, .an having a 'perti'n adjacent to the periphe lof the" diaphragm but mov.-y le able relatively lto said 4periphery vduring the ges and the diaphragm,- subetantiallylas f periphery of 'the diaphragm,

devi-ceof theclass al..

gm to sa1d support, sai d -rlngibe'ingvprovlded 'wlth an annular flange eirtending .over one face of the diaphragm and arranged .to hold Athe outer-- extremityof thephragm,

describe 45. In'a device of the class-described, a diaphragm, cured to said dlaphragm at the center thereof, and a stylus mounted in said arm, said arm \co acting with the peripheral portion of saiddiaphragm to resist thrust on said stylus, and having a portion adjacent to the diaphragm'but movable relatively, tosaid periphery duripg the visupport ,'therefor, a'stylus arm se br-ation of the diaphragm, yand means yieldingly -pressing said `I'novable portion of said armtoward said diaphragm, substantially as described.

6. In a devlee of the class described, a diaphragm,-a support-therefor, a stylus arm secured to said diaphragm at the center thereof, and a stylus mounted in said arm, said arm co-acting with the peripheral portion of said diaphragm to. resist thrust on sald stylus, and having a portion adjacent to the periphery of the diaphragm, but movable relatively to ysaid periphery during the vibration of the. diaplragrm and a member securing said diaphragm to said support and yi'eldingly pressing said movablel part 'of 4said arm toward saidxdiaphargm, substantially as-described. 4 7. In a devicel ofthe class described, aa support therefor, a stylus. arm

e. secured to saiddiaphragmI at the center ,described, a; f lus-"arm secured thereof, and a stylus'mounted in s aid arm, said arm co-actin with the peripheral Iporlition' of said diap ragni to resist thrust on said stylus, and having `a portion'adjacent to the perip ery-.of

the diaphragm but movable relatively to `said periphery during the vibration 'ofA the diaphragm, and la .stop for limiting the movement from said diaphragm, scribed.

l 8. In a of` said `arm' away substantially asdedevice f the class described, a diaa support therefor, a styl cured to said diaphragm atfthe center thereof, and a stylus mounted in vsaid arm, said arm having a vibration ofthe diaphragm, substantially as described.

arm'sel rtion'vbea-ring against the eri heral ort1`on of said ldia hra to reltending toward the edge thereof,.'ad 'a ring p P p p gm 9. In a devic'eio'f the-class described, a diaa support therefor, a stylus arm to said diaphragm substantially .at

phragm, secured ythecenter thereof and extending into proximityxto'the eriphery thereof, and means j formed of yie ding material and carriedby said .diaphragm for -securing said" diaa fiange extending over one face of said dia- 10. In a device of the class described, a ,1

diaphragm, a support therefor, a stylus arm. secured to said diaphragm substantially at the center thereof and extending into prox imity to the periphery thereof, and a ring securing said diaphra tosaid support,

v said ring being provided with an annular flange ofyieldingmaterial extending over one of the faces of said diaphragm and arranged to hold the outer extremity of said arm in operative relation to said diaphragm, substantially as described.

11. In adevice of the class described, the combination of 'a diaphragm, and a, stylus arm Secured to said diaphragm substantially at the center thereofr and extending toward the periphery of the diaphragm, a stylus on l said arm, the outer portion of said arm coacting with said diaphragm to resist thrust on said stylus but being movable relatively to the diaphragm during the vibration of the latter, substantially as described.

12. In a device of theclass described, a diaphragm, a casing therefor formed to permitremoval of the diaphragm Without removal of parts of thecasing, a 'Stylus arm carried by the diaphragm, and a resilient gasket mounted directlyv upon and carried by the diaphragm and engaging the casing, saidgasket constituting the sole means for securlng the ,diaphragm and stylus arm to the casing, substantially as described.

This specification signed and'lwitnessed this 15th day of February, 1911.

NEWMAN H. HOLLAND.

Witnesses:

FREDERICK BAGHMANN, ANNA R. KLEHM. 

